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-   -   Can fluent get the lift and drag coefficients of the two walls (in different directio (http://www.cfd-online.com/Forums/fluent/128282-can-fluent-get-lift-drag-coefficients-two-walls-different-directio.html)

yuyuxuan January 8, 2014 06:59

Can fluent get the lift and drag coefficients of the two walls (in different directio
 
There are two walls wall1 and wall2.

wall1 z-axis direction, wall2 x-axis direction.

I use {monitor-force}. After the calculations and I found that only get wall2 lift and drag coefficients. That means when I set, the wall2 settings cover the previous settings

so I want to know can fluent get the lift and drag coefficients of the two walls , thank you.

-mAx- January 8, 2014 08:48

Define 2 monitorings: one for wall1 and one for wall2

yuyuxuan January 8, 2014 20:09

Quote:

Originally Posted by -mAx- (Post 469129)
Define 2 monitorings: one for wall1 and one for wall2

I use the Fluent 6.3.26. And in the GUI, I cannot find the {Define monitor number}. Where is it, and thanks for replying.

-mAx- January 9, 2014 01:45

Monitoring Forces and Moments on Individual Walls

By default, FLUENT will compute and monitor the total force or moment for all of the selected walls combined together. If you have selected multiple walls and you want to monitor the force or moment on each wall separately, you can turn on the Per Zone option in the Force Monitors panel. The specified force vector or moment axis will apply to all selected walls. If the monitor results are printed to the console (using the Print option), the force or moment on each wall will be printed in a separate column. If the results are plotted (using the Plot option), a separate curve for each wall will be drawn in the specified plot window. If the results are written to a file (using the Write option), the file will be in a tab-separated column format based on the XY plot file format described in Section 28.8.5.

https://www.sharcnet.ca/Software/Flu...049.htm#179853

yuyuxuan January 9, 2014 06:07

Quote:

Originally Posted by -mAx- (Post 469213)
Monitoring Forces and Moments on Individual Walls

By default, FLUENT will ......

https://www.sharcnet.ca/Software/Flu...049.htm#179853

I see the links, but there is a problem that:

The lift direction of wall1 is z-axis .

while the lift direction of wall2 is x-axis .

So if I choose two walls, it shares the same force direction,right? Then if I put (0,0,1) in {Force vector} . Does it change the force direction of wall2 into z-axis?

-mAx- January 9, 2014 08:17

ok I understand
Then you can try to define 2 monitors by clicking "Apply" once one monitor is well set

https://www.sharcnet.ca/Software/Flu...g/img13325.gif
Remember to click Apply after making the desired modifications to the setup for each coefficient report.

yuyuxuan January 10, 2014 07:29

Quote:

Originally Posted by -mAx- (Post 469261)
ok I understand
Then you can try to define 2 monitors by clicking "Apply" once one monitor is well set

https://www.sharcnet.ca/Software/Flu...g/img13325.gif
Remember to click Apply after making the desired modifications to the setup for each coefficient report.

I try but it still only get the wall2 data.

-mAx- January 10, 2014 07:58

then I don't know since I don't have Fluent

yuyuxuan January 10, 2014 21:13

Quote:

Originally Posted by -mAx- (Post 469440)
then I don't know since I don't have Fluent



:), Thank you for your kind help


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